Spring-packing for spindle-bolsters.



PATENTED NOV. 17, 1903.

G. M. BURGESS. SPRING PACKING FOR SPINDLE BOLSTERS.

APPLICATION FILED NOV. 17, 1902.

N0 MODEL.

m l V :5 his H orrre 59 w .Pate'nted November 17, 1903.

PAT NT Erica.

GEORGE M. BURGESS, OF HOPEDALE, MASSACHUSETTS.

SPRING-PACKING FOR SPlNDLE-BOLSTERS.

i-BEGIFICATION forming part of Letters Patent N 0. 744,040, datedNovember 17, 1903.

Application filedliiovcmlier 17, 1902. Serial No. 131,750. (No modelJ Toall whom it may concern:

Be it known that i, GEORGE M. BURGESS, a citizen of the United States,residing at Hopedale, in the county of Worcester and State ofMassachusetts, have invented a new and useful Spring-Packing forSpindle-Bolsters, of which the following is a specification, Y

This invention relates to an improved con-- struction for flexiblysupporting a spinning or twisting spindle.

The object of this invention is to provide simple, durable, efficient,and inexpensive means for supporting the bolster of a spindlebearingwithin its base-piece.

To these ends this invention consists of spring-bolster packing and ofthe combinations of parts therewith, as hereinafter described, and moreparticularly pointed out in the claims at the end of this specification;

In the accompanying drawings, Figure 1 is a side view, partially brokenaway, of sufficient parts of a spindle and its bearing to illustrate theapplication of my invention thereto. Fig. 2 is a detached View of a spindle-bolster with spring-packing constructed according to my inventionapplied thereto.

Fig. 3 is a plan view of the sheetmetal blank or stamping which Ipreferably employ to form one of the sets of spring-arms. Fig. 4. is aperspective view of one set of the springarms formed from the blank orstamping illustrated in Fig. 3. Fig. 5 is a similar View illustrating aslightly-modified form of construction in which the spring-arms areformed by cutting away a sheet-metal tube.

In operating the modern high-speed spinning or twisting spindles it hasbeen found necessary to provide a considerable flexibility of hearing.In the ordinary spindle constructions which are now most extensivelyemployed a socket or base-piece is fastened in place in thespindle-rail, and fitting loosely into the base-piece is the bolster ortube which forms the bearing of the shaft of the spindle. Theflexibility of the spindle-bearing is provided by the compressiblepacking which is interposed between the bolster and the base into whichthe bolster fits. In nearly all spindle constructions which are nowemployed a packing of cloth or felt is employed for supporting eachbolster.

The especial object of my present invention is to improve spindlebearings or supports by dispensing with the use of cloth, felt, orsimilar material as a packing for spindlebolsters and to provide ametallic packing,

which will support bolsters in a more eflicient and flexible manner thanthe ordinary felt or cloth packings and which will be practicallyindestructible, so that it will not require frequent renewals orreplacement. To these ends a packing for spindle-bolsters constructedaccording to my invention consists, essentially, of verticalspring-arms. Two sets of these spring-arms are employed, each set havinga ring or connecting section. Near their ends or at other points intheir length the spring-arms, are bent or bowed, so that they will tendto spring outwardly. In practice two sets are employed, which inter meshwith each other and which are arranged so that the bent or bowed sectionof each set of arms does not come opposite thebowed section of the otherset .of spring-arms, so that the bolster will have two separate pointsof support.

Referring to the accompanying drawings for a detail description of aconstruction embodying my invention, as shown in Fig. 1, B designates abase-piece or socket, which may be secured in the spindle-rail of anordinaryspinningortwistingframe. The-spindle-bearing within thebase-piece B may be supplied with oil through the ordinary oilchannel,which is closed by the oil-cover O. Fitting loosely into thebase-piece'B is atnbular bolster D. Threaded into the lower end of thebolster D is the. step or bottom screw S. The shaft of the spindle T isjournaledin the bolster D, and carried by the spindle T isv the ordinarywhirl V and bob- LCD flexibly supporting the bolster D Within thebase-piece B. Two sets of these spring-arms are employed. In thepreferred way of making these spring-arms I employ a sheet-metal blankor stamping having an end section 10, with fingers 11 extendingtherefrom. This blank or sheet-metal stamping is then preferably shapedover a mandrel to bend the end section 10 substantially in the form of aring, as shown in Fig. 4, and each of the arms 11 is provided with abowed-out or spring section 12 near its end. By associating two sets ofspring-arms as thus constructed so that the arms intermesh with eachother, as illustrated in Fig. 2, a spindle-packing will be provided, bymeans of which the bolster will have two separate points of supportwithin its base, insuring perfect alinernent of the bolster, while atthe same time leaving it sufficiently flexible to adapt it to thehighest speeds at which spinning or twisting spindles can be run.

In Fig. 5 I have illustrated a modified form of construction, in whichthe spring-arms 11 are formed by cutting away a tube 100.

It is obvious that the spring-arms may be stamped out or formed in otherways than those herein illustrated. I do not wish,therefore, to belimited to the constructions I have herein shown and described; but

What I do claim, and desire to secure by Letters Patent of the UnitedStates, is

1. In a spindle-bearing, the combination of the base, a bolster, and apacking for flexibly supporting the bolster within the base, comprisinga set of spring-arms, a connecting piece or ring, and a second set ofspringarms inter-meshing with the first set of springarms and a secondconnecting piece or ring.

2. In a spindle-bearing, the combination of the base, abolster, andapacking for flexibly supporting the bolster within the base, comprisinga set of spring-arms and a connecting piece or ring, and a second set ofspring-arms intermeshing with the first set and a second connectingpiece or ring, said spring-arms having bent-outsections for supportingthe bolster at separated points along its length.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

GEORGE M. BURGESS.

\Vitnesses:

JOHN F. CROWELL, PHILIP W. SOUTHGATE.

